fix(pkg): file "config.js" should be packaged too

[Kocal]

Close #124, incriminated commit: 5a4edba

We actually need to package config.js file too prevent error:

> jsdoc -c jsdoc.config.json

internal/modules/cjs/loader.js:550
    throw err;
    ^

Error: Cannot find module './config'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:548:15)
    at Requizzle.requizzle (/Users/paul/dev/kpmg/SOFY2/frontend/node_modules/requizzle/lib/requizzle.js:87:22)
    at infectProxy (/Users/paul/dev/kpmg/SOFY2/frontend/node_modules/requizzle/lib/loader.js:82:28)
    at Module.targetModule.require (/Users/paul/dev/kpmg/SOFY2/frontend/node_modules/requizzle/lib/loader.js:101:11)
    at require (internal/modules/cjs/helpers.js:11:18)
.....